4 in 1 :ND4+ND8+ND16+ND32 3 in 1:UV+CPL+ND8 UV Filter The main function of the UV Filters is to absorb ultraviolet rays with a wavelength below 400 nanometers, and it can be used for shooting in seashores, mountains, snowfields and open areas, and can reduce the blue tone caused by ultraviolet rays. Helps improve clarity and color reproduction CPL filter The CPL function can eliminate the reflection on the surface of the object, so that the object can show the original clarity, texture and color saturation in the too bright environment ND Filer The role of the ND filter is to filter the light and achieve the effect of weakening the light. The main uses are divided into several, one is to shoot very bright objects, such as the sun, astrophotography; The second is to use a large aperture in a well-lit environment, and the third is to use the slow shutter retardation hazy illusory effect. Description: Material: Aluminum alloy (frame) + optical glass, Applicable models: for Pocket 2, Color: Black, Net weight:0.02oz.(0.8g)(Single),0.13oz.(3.8g)(Set of 4),0.08oz.(2.4g)(Set of 3) Package weight:0.85oz.(24.5g)(Single),1.7oz.(48.6g)(Set of 4),1.67oz.(47.8g)(Set of 3) Product size:0.7*0.51*0.11in(1.8*1.3*0.3cm) Package size:2.51*0.74*2.55in(6.4*1.9*6.5cm)(Single),3.14*0.78*3.26in(8*2*8.3cm)(Combination) Packing list: 1pcs Filter. Note: 1.Does not include PTZ camera, 2.Transition: 1cm=10mm=0.39inch, 3.Please allow 1-3mm error due to manual measurement. please make sure you do not mind before ordering, 4.Due to the difference between different monitors, the picture may not reflect the actual color of the item,please make sure you do not mind before ordering, Thank you! The "Satisfied Buying Store" store is an authorized store of Adhering to the principle of "committed to practical and innovative design, leading aviation professional photography!" philosophy. Founded in 2016, has grown into a leader and innovator in the drone accessories and action camera accessories industry in a short period of time. We offer a full range of custom accessories for drones, action cameras, handheld stabilizers. R&D, design and production of various drone accessories such as landing gear, protective covers, camera filters, etc. It has developed, designed and produced hundreds of products, and has dozens of intellectual property patents. It has provided high-quality products and satisfactory services to more than 100 countries and regions around the world and more than one million consumers. Thank you for your choice. We will provide you with a complete full range of services